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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-09 09:14:38 +0300 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-09 09:14:38 +0300 |
commit | bcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71 (patch) | |
tree | 2f6dffd2d3e4dd67355a224de7e7a960335a92fd /arch/arm/plat-omap/include/plat/mailbox.h | |
parent | 11c34c7deaeeebcee342cbc35e1bb2a6711b2431 (diff) | |
parent | 3ff6a468b45b5dfeb0e903e56f4eb27d34b2437c (diff) | |
download | linux-bcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71.tar.xz |
Merge commit 'origin/master' into next
Conflicts:
include/linux/kvm.h
Diffstat (limited to 'arch/arm/plat-omap/include/plat/mailbox.h')
-rw-r--r-- | arch/arm/plat-omap/include/plat/mailbox.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/mailbox.h b/arch/arm/plat-omap/include/plat/mailbox.h new file mode 100644 index 000000000000..729166b76a7c --- /dev/null +++ b/arch/arm/plat-omap/include/plat/mailbox.h @@ -0,0 +1,111 @@ +/* mailbox.h */ + +#ifndef MAILBOX_H +#define MAILBOX_H + +#include <linux/wait.h> +#include <linux/workqueue.h> +#include <linux/blkdev.h> +#include <linux/interrupt.h> + +typedef u32 mbox_msg_t; +struct omap_mbox; + +typedef int __bitwise omap_mbox_irq_t; +#define IRQ_TX ((__force omap_mbox_irq_t) 1) +#define IRQ_RX ((__force omap_mbox_irq_t) 2) + +typedef int __bitwise omap_mbox_type_t; +#define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1) +#define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2) + +struct omap_mbox_ops { + omap_mbox_type_t type; + int (*startup)(struct omap_mbox *mbox); + void (*shutdown)(struct omap_mbox *mbox); + /* fifo */ + mbox_msg_t (*fifo_read)(struct omap_mbox *mbox); + void (*fifo_write)(struct omap_mbox *mbox, mbox_msg_t msg); + int (*fifo_empty)(struct omap_mbox *mbox); + int (*fifo_full)(struct omap_mbox *mbox); + /* irq */ + void (*enable_irq)(struct omap_mbox *mbox, + omap_mbox_irq_t irq); + void (*disable_irq)(struct omap_mbox *mbox, + omap_mbox_irq_t irq); + void (*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); + int (*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); + /* ctx */ + void (*save_ctx)(struct omap_mbox *mbox); + void (*restore_ctx)(struct omap_mbox *mbox); +}; + +struct omap_mbox_queue { + spinlock_t lock; + struct request_queue *queue; + struct work_struct work; + struct tasklet_struct tasklet; + int (*callback)(void *); + struct omap_mbox *mbox; +}; + +struct omap_mbox { + char *name; + unsigned int irq; + + struct omap_mbox_queue *txq, *rxq; + + struct omap_mbox_ops *ops; + + mbox_msg_t seq_snd, seq_rcv; + + struct device *dev; + + struct omap_mbox *next; + void *priv; + + void (*err_notify)(void); +}; + +int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg); +void omap_mbox_init_seq(struct omap_mbox *); + +struct omap_mbox *omap_mbox_get(const char *); +void omap_mbox_put(struct omap_mbox *); + +int omap_mbox_register(struct device *parent, struct omap_mbox *); +int omap_mbox_unregister(struct omap_mbox *); + +static inline void omap_mbox_save_ctx(struct omap_mbox *mbox) +{ + if (!mbox->ops->save_ctx) { + dev_err(mbox->dev, "%s:\tno save\n", __func__); + return; + } + + mbox->ops->save_ctx(mbox); +} + +static inline void omap_mbox_restore_ctx(struct omap_mbox *mbox) +{ + if (!mbox->ops->restore_ctx) { + dev_err(mbox->dev, "%s:\tno restore\n", __func__); + return; + } + + mbox->ops->restore_ctx(mbox); +} + +static inline void omap_mbox_enable_irq(struct omap_mbox *mbox, + omap_mbox_irq_t irq) +{ + mbox->ops->enable_irq(mbox, irq); +} + +static inline void omap_mbox_disable_irq(struct omap_mbox *mbox, + omap_mbox_irq_t irq) +{ + mbox->ops->disable_irq(mbox, irq); +} + +#endif /* MAILBOX_H */ |